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authorhongbotian <hongbo.tianhongbo@huawei.com>2015-11-30 03:10:21 -0500
committerhongbotian <hongbo.tianhongbo@huawei.com>2015-11-30 03:10:21 -0500
commitc0b7206652b2852bc574694e7ba07ba1c2acdc00 (patch)
tree5cb95cb0e19e03610525903df46279df2c3b7eb1 /rubbos/app/httpd-2.0.64/modules/generators/mod_cgid.c
parentb6d3d6e668b793220f2d3af1bc3e828553dc3fe6 (diff)
delete app
Change-Id: Id4c572809969ebe89e946e88063eaed262cff3f2 Signed-off-by: hongbotian <hongbo.tianhongbo@huawei.com>
Diffstat (limited to 'rubbos/app/httpd-2.0.64/modules/generators/mod_cgid.c')
-rw-r--r--rubbos/app/httpd-2.0.64/modules/generators/mod_cgid.c1744
1 files changed, 0 insertions, 1744 deletions
diff --git a/rubbos/app/httpd-2.0.64/modules/generators/mod_cgid.c b/rubbos/app/httpd-2.0.64/modules/generators/mod_cgid.c
deleted file mode 100644
index 55ac3b04..00000000
--- a/rubbos/app/httpd-2.0.64/modules/generators/mod_cgid.c
+++ /dev/null
@@ -1,1744 +0,0 @@
-/* Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/*
- * http_script: keeps all script-related ramblings together.
- *
- * Compliant to cgi/1.1 spec
- *
- * Adapted by rst from original NCSA code by Rob McCool
- *
- * Apache adds some new env vars; REDIRECT_URL and REDIRECT_QUERY_STRING for
- * custom error responses, and DOCUMENT_ROOT because we found it useful.
- * It also adds SERVER_ADMIN - useful for scripts to know who to mail when
- * they fail.
- */
-
-#include "apr_lib.h"
-#include "apr_strings.h"
-#include "apr_general.h"
-#include "apr_file_io.h"
-#include "apr_portable.h"
-#include "apr_buckets.h"
-#include "apr_optional.h"
-#include "apr_signal.h"
-
-#define APR_WANT_STRFUNC
-#include "apr_want.h"
-
-#if APR_HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
-#if APR_HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if APR_HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#define CORE_PRIVATE
-
-#include "util_filter.h"
-#include "httpd.h"
-#include "http_config.h"
-#include "http_request.h"
-#include "http_core.h"
-#include "http_protocol.h"
-#include "http_main.h"
-#include "http_log.h"
-#include "util_script.h"
-#include "ap_mpm.h"
-#include "unixd.h"
-#include "mod_suexec.h"
-#include "../filters/mod_include.h"
-
-#include "mod_core.h"
-
-
-/* ### should be tossed in favor of APR */
-#include <sys/stat.h>
-#include <sys/un.h> /* for sockaddr_un */
-
-
-module AP_MODULE_DECLARE_DATA cgid_module;
-
-static int cgid_start(apr_pool_t *p, server_rec *main_server, apr_proc_t *procnew);
-static int cgid_init(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *main_server);
-static int handle_exec(include_ctx_t *ctx, apr_bucket_brigade **bb, request_rec *r,
- ap_filter_t *f, apr_bucket *head_ptr, apr_bucket **inserted_head);
-
-static APR_OPTIONAL_FN_TYPE(ap_register_include_handler) *cgid_pfn_reg_with_ssi;
-static APR_OPTIONAL_FN_TYPE(ap_ssi_get_tag_and_value) *cgid_pfn_gtv;
-static APR_OPTIONAL_FN_TYPE(ap_ssi_parse_string) *cgid_pfn_ps;
-
-static apr_pool_t *pcgi = NULL;
-static int total_modules = 0;
-static pid_t daemon_pid;
-static int daemon_should_exit = 0;
-static server_rec *root_server = NULL;
-static apr_pool_t *root_pool = NULL;
-static ap_unix_identity_t empty_ugid = { (uid_t)-1, (gid_t)-1, -1 };
-
-/* Read and discard the data in the brigade produced by a CGI script */
-static void discard_script_output(apr_bucket_brigade *bb);
-
-/* This doer will only ever be called when we are sure that we have
- * a valid ugid.
- */
-static ap_unix_identity_t *cgid_suexec_id_doer(const request_rec *r)
-{
- return (ap_unix_identity_t *)
- ap_get_module_config(r->request_config, &cgid_module);
-}
-
-/* KLUDGE --- for back-combatibility, we don't have to check ExecCGI
- * in ScriptAliased directories, which means we need to know if this
- * request came through ScriptAlias or not... so the Alias module
- * leaves a note for us.
- */
-
-static int is_scriptaliased(request_rec *r)
-{
- const char *t = apr_table_get(r->notes, "alias-forced-type");
- return t && (!strcasecmp(t, "cgi-script"));
-}
-
-/* Configuration stuff */
-
-#define DEFAULT_LOGBYTES 10385760
-#define DEFAULT_BUFBYTES 1024
-#define DEFAULT_SOCKET DEFAULT_REL_RUNTIMEDIR "/cgisock"
-
-#define CGI_REQ 1
-#define SSI_REQ 2
-#define GETPID_REQ 3 /* get the pid of script created for prior request */
-
-#define ERRFN_USERDATA_KEY "CGIDCHILDERRFN"
-
-/* DEFAULT_CGID_LISTENBACKLOG controls the max depth on the unix socket's
- * pending connection queue. If a bunch of cgi requests arrive at about
- * the same time, connections from httpd threads/processes will back up
- * in the queue while the cgid process slowly forks off a child to process
- * each connection on the unix socket. If the queue is too short, the
- * httpd process will get ECONNREFUSED when trying to connect.
- */
-#ifndef DEFAULT_CGID_LISTENBACKLOG
-#define DEFAULT_CGID_LISTENBACKLOG 100
-#endif
-
-/* DEFAULT_CONNECT_ATTEMPTS controls how many times we'll try to connect
- * to the cgi daemon from the thread/process handling the cgi request.
- * Generally we want to retry when we get ECONNREFUSED since it is
- * probably because the listen queue is full. We need to try harder so
- * the client doesn't see it as a 503 error.
- *
- * Set this to 0 to continually retry until the connect works or Apache
- * terminates.
- */
-#ifndef DEFAULT_CONNECT_ATTEMPTS
-#define DEFAULT_CONNECT_ATTEMPTS 15
-#endif
-
-typedef struct {
- const char *sockname;
- const char *logname;
- long logbytes;
- int bufbytes;
-} cgid_server_conf;
-
-typedef struct {
- int req_type; /* request type (CGI_REQ, SSI_REQ, etc.) */
- unsigned long conn_id; /* connection id; daemon uses this as a hash value
- * to find the script pid when it is time for that
- * process to be cleaned up
- */
- int core_module_index;
- int env_count;
- ap_unix_identity_t ugid;
- apr_size_t filename_len;
- apr_size_t argv0_len;
- apr_size_t uri_len;
- apr_size_t args_len;
- int loglevel; /* to stuff in server_rec */
-} cgid_req_t;
-
-/* This routine is called to create the argument list to be passed
- * to the CGI script. When suexec is enabled, the suexec path, user, and
- * group are the first three arguments to be passed; if not, all three
- * must be NULL. The query info is split into separate arguments, where
- * "+" is the separator between keyword arguments.
- *
- * Do not process the args if they containing an '=' assignment.
- */
-static char **create_argv(apr_pool_t *p, char *path, char *user, char *group,
- char *av0, const char *args)
-{
- int x, numwords;
- char **av;
- char *w;
- int idx = 0;
-
- if (ap_strchr_c(args, '=')) {
- numwords = 0;
- }
- else {
- /* count the number of keywords */
-
- for (x = 0, numwords = 1; args[x]; x++) {
- if (args[x] == '+') {
- ++numwords;
- }
- }
- }
-
- if (numwords > APACHE_ARG_MAX - 5) {
- numwords = APACHE_ARG_MAX - 5; /* Truncate args to prevent overrun */
- }
- av = (char **) apr_pcalloc(p, (numwords + 5) * sizeof(char *));
-
- if (path) {
- av[idx++] = path;
- }
- if (user) {
- av[idx++] = user;
- }
- if (group) {
- av[idx++] = group;
- }
-
- av[idx++] = apr_pstrdup(p, av0);
-
- for (x = 1; x <= numwords; x++) {
- w = ap_getword_nulls(p, &args, '+');
- if (strcmp(w, "")) {
- ap_unescape_url(w);
- av[idx++] = ap_escape_shell_cmd(p, w);
- }
- }
- av[idx] = NULL;
- return av;
-}
-
-#if APR_HAS_OTHER_CHILD
-static void cgid_maint(int reason, void *data, apr_wait_t status)
-{
- apr_proc_t *proc = data;
- int mpm_state;
- int stopping;
-
- switch (reason) {
- case APR_OC_REASON_DEATH:
- apr_proc_other_child_unregister(data);
- /* If apache is not terminating or restarting,
- * restart the cgid daemon
- */
- stopping = 1; /* if MPM doesn't support query,
- * assume we shouldn't restart daemon
- */
- if (ap_mpm_query(AP_MPMQ_MPM_STATE, &mpm_state) == APR_SUCCESS &&
- mpm_state != AP_MPMQ_STOPPING) {
- stopping = 0;
- }
- if (!stopping) {
- ap_log_error(APLOG_MARK, APLOG_ERR, 0, NULL,
- "cgid daemon process died, restarting");
- cgid_start(root_pool, root_server, proc);
- }
- break;
- case APR_OC_REASON_RESTART:
- /* don't do anything; server is stopping or restarting */
- apr_proc_other_child_unregister(data);
- break;
- case APR_OC_REASON_LOST:
- /* Restart the child cgid daemon process */
- apr_proc_other_child_unregister(data);
- cgid_start(root_pool, root_server, proc);
- break;
- case APR_OC_REASON_UNREGISTER:
- /* we get here when pcgi is cleaned up; pcgi gets cleaned
- * up when pconf gets cleaned up
- */
- kill(proc->pid, SIGHUP); /* send signal to daemon telling it to die */
- break;
- }
-}
-#endif
-
-/* deal with incomplete reads and signals
- * assume you really have to read buf_size bytes
- */
-static apr_status_t sock_read(int fd, void *vbuf, size_t buf_size)
-{
- char *buf = vbuf;
- int rc;
- size_t bytes_read = 0;
-
- do {
- do {
- rc = read(fd, buf + bytes_read, buf_size - bytes_read);
- } while (rc < 0 && errno == EINTR);
- switch(rc) {
- case -1:
- return errno;
- case 0: /* unexpected */
- return ECONNRESET;
- default:
- bytes_read += rc;
- }
- } while (bytes_read < buf_size);
-
- return APR_SUCCESS;
-}
-
-/* deal with signals
- */
-static apr_status_t sock_write(int fd, const void *buf, size_t buf_size)
-{
- int rc;
-
- do {
- rc = write(fd, buf, buf_size);
- } while (rc < 0 && errno == EINTR);
- if (rc < 0) {
- return errno;
- }
-
- return APR_SUCCESS;
-}
-
-static apr_status_t get_req(int fd, request_rec *r, char **argv0, char ***env,
- cgid_req_t *req)
-{
- int i;
- char **environ;
- core_request_config *temp_core;
- void **rconf;
- apr_status_t stat;
-
- r->server = apr_pcalloc(r->pool, sizeof(server_rec));
-
- /* read the request header */
- stat = sock_read(fd, req, sizeof(*req));
- if (stat != APR_SUCCESS) {
- return stat;
- }
- r->server->loglevel = req->loglevel;
- if (req->req_type == GETPID_REQ) {
- /* no more data sent for this request */
- return APR_SUCCESS;
- }
-
- /* handle module indexes and such */
- rconf = (void **) apr_pcalloc(r->pool, sizeof(void *) * (total_modules + DYNAMIC_MODULE_LIMIT));
-
- temp_core = (core_request_config *)apr_palloc(r->pool, sizeof(core_module));
- rconf[req->core_module_index] = (void *)temp_core;
- r->request_config = (ap_conf_vector_t *)rconf;
- ap_set_module_config(r->request_config, &cgid_module, (void *)&req->ugid);
-
- /* Read the filename, argv0, uri, and args */
- r->filename = apr_pcalloc(r->pool, req->filename_len + 1);
- *argv0 = apr_pcalloc(r->pool, req->argv0_len + 1);
- r->uri = apr_pcalloc(r->pool, req->uri_len + 1);
- if ((stat = sock_read(fd, r->filename, req->filename_len)) != APR_SUCCESS ||
- (stat = sock_read(fd, *argv0, req->argv0_len)) != APR_SUCCESS ||
- (stat = sock_read(fd, r->uri, req->uri_len)) != APR_SUCCESS) {
- return stat;
- }
-
- r->args = apr_pcalloc(r->pool, req->args_len + 1); /* empty string if no args */
- if (req->args_len) {
- if ((stat = sock_read(fd, r->args, req->args_len)) != APR_SUCCESS) {
- return stat;
- }
- }
-
- /* read the environment variables */
- environ = apr_pcalloc(r->pool, (req->env_count + 2) *sizeof(char *));
- for (i = 0; i < req->env_count; i++) {
- apr_size_t curlen;
-
- if ((stat = sock_read(fd, &curlen, sizeof(curlen))) != APR_SUCCESS) {
- return stat;
- }
- environ[i] = apr_pcalloc(r->pool, curlen + 1);
- if ((stat = sock_read(fd, environ[i], curlen)) != APR_SUCCESS) {
- return stat;
- }
- }
- *env = environ;
-
-#if 0
-#ifdef RLIMIT_CPU
- sock_read(fd, &j, sizeof(int));
- if (j) {
- temp_core->limit_cpu = (struct rlimit *)apr_palloc (sizeof(struct rlimit));
- sock_read(fd, temp_core->limit_cpu, sizeof(struct rlimit));
- }
- else {
- temp_core->limit_cpu = NULL;
- }
-#endif
-
-#if defined (RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
- sock_read(fd, &j, sizeof(int));
- if (j) {
- temp_core->limit_mem = (struct rlimit *)apr_palloc(r->pool, sizeof(struct rlimit));
- sock_read(fd, temp_core->limit_mem, sizeof(struct rlimit));
- }
- else {
- temp_core->limit_mem = NULL;
- }
-#endif
-
-#ifdef RLIMIT_NPROC
- sock_read(fd, &j, sizeof(int));
- if (j) {
- temp_core->limit_nproc = (struct rlimit *)apr_palloc(r->pool, sizeof(struct rlimit));
- sock_read(fd, temp_core->limit_nproc, sizeof(struct rlimit));
- }
- else {
- temp_core->limit_nproc = NULL;
- }
-#endif
-#endif
-
- return APR_SUCCESS;
-}
-
-static apr_status_t send_req(int fd, request_rec *r, char *argv0, char **env,
- int req_type)
-{
- int i;
- cgid_req_t req = {0};
- apr_status_t stat;
- ap_unix_identity_t * ugid = ap_run_get_suexec_identity(r);
-
- if (ugid == NULL) {
- req.ugid = empty_ugid;
- } else {
- memcpy(&req.ugid, ugid, sizeof(ap_unix_identity_t));
- }
-
- req.req_type = req_type;
- req.conn_id = r->connection->id;
- req.core_module_index = core_module.module_index;
- for (req.env_count = 0; env[req.env_count]; req.env_count++) {
- continue;
- }
- req.filename_len = strlen(r->filename);
- req.argv0_len = strlen(argv0);
- req.uri_len = strlen(r->uri);
- req.args_len = r->args ? strlen(r->args) : 0;
- req.loglevel = r->server->loglevel;
-
- /* Write the request header */
- if ((stat = sock_write(fd, &req, sizeof(req))) != APR_SUCCESS) {
- return stat;
- }
-
- /* Write filename, argv0, uri, and args */
- if ((stat = sock_write(fd, r->filename, req.filename_len)) != APR_SUCCESS ||
- (stat = sock_write(fd, argv0, req.argv0_len)) != APR_SUCCESS ||
- (stat = sock_write(fd, r->uri, req.uri_len)) != APR_SUCCESS) {
- return stat;
- }
- if (req.args_len) {
- if ((stat = sock_write(fd, r->args, req.args_len)) != APR_SUCCESS) {
- return stat;
- }
- }
-
- /* write the environment variables */
- for (i = 0; i < req.env_count; i++) {
- apr_size_t curlen = strlen(env[i]);
-
- if ((stat = sock_write(fd, &curlen, sizeof(curlen))) != APR_SUCCESS) {
- return stat;
- }
-
- if ((stat = sock_write(fd, env[i], curlen)) != APR_SUCCESS) {
- return stat;
- }
- }
-
-#if 0
-#ifdef RLIMIT_CPU
- if (conf->limit_cpu) {
- len = 1;
- stat = sock_write(fd, &len, sizeof(int));
- stat = sock_write(fd, conf->limit_cpu, sizeof(struct rlimit));
- }
- else {
- len = 0;
- stat = sock_write(fd, &len, sizeof(int));
- }
-#endif
-
-#if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
- if (conf->limit_mem) {
- len = 1;
- stat = sock_write(fd, &len, sizeof(int));
- stat = sock_write(fd, conf->limit_mem, sizeof(struct rlimit));
- }
- else {
- len = 0;
- stat = sock_write(fd, &len, sizeof(int));
- }
-#endif
-
-#ifdef RLIMIT_NPROC
- if (conf->limit_nproc) {
- len = 1;
- stat = sock_write(fd, &len, sizeof(int));
- stat = sock_write(fd, conf->limit_nproc, sizeof(struct rlimit));
- }
- else {
- len = 0;
- stat = sock_write(fd, &len, sizeof(int));
- }
-#endif
-#endif
- return APR_SUCCESS;
-}
-
-static void daemon_signal_handler(int sig)
-{
- if (sig == SIGHUP) {
- ++daemon_should_exit;
- }
-}
-
-static void cgid_child_errfn(apr_pool_t *pool, apr_status_t err,
- const char *description)
-{
- request_rec *r;
- void *vr;
-
- apr_pool_userdata_get(&vr, ERRFN_USERDATA_KEY, pool);
- r = vr;
-
- /* sure we got r, but don't call ap_log_rerror() because we don't
- * have r->headers_in and possibly other storage referenced by
- * ap_log_rerror()
- */
- ap_log_error(APLOG_MARK, APLOG_ERR, err, r->server, "%s",
-#ifdef AP_UNSAFE_ERROR_LOG_UNESCAPED
- description
-#else
- ap_escape_logitem(pool, description)
-#endif
- );
-}
-
-static int cgid_server(void *data)
-{
- struct sockaddr_un unix_addr;
- int sd, sd2, rc;
- mode_t omask;
- apr_socklen_t len;
- apr_pool_t *ptrans;
- server_rec *main_server = data;
- cgid_server_conf *sconf = ap_get_module_config(main_server->module_config,
- &cgid_module);
- apr_hash_t *script_hash = apr_hash_make(pcgi);
-
- apr_pool_create(&ptrans, pcgi);
-
- apr_signal(SIGCHLD, SIG_IGN);
- apr_signal(SIGHUP, daemon_signal_handler);
-
- if (unlink(sconf->sockname) < 0 && errno != ENOENT) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
- "Couldn't unlink unix domain socket %s",
- sconf->sockname);
- /* just a warning; don't bail out */
- }
-
- /* cgid should use its own suexec doer */
- ap_hook_get_suexec_identity(cgid_suexec_id_doer, NULL, NULL,
- APR_HOOK_REALLY_FIRST);
- apr_hook_sort_all();
-
- if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
- "Couldn't create unix domain socket");
- return errno;
- }
-
- memset(&unix_addr, 0, sizeof(unix_addr));
- unix_addr.sun_family = AF_UNIX;
- strcpy(unix_addr.sun_path, sconf->sockname);
-
- omask = umask(0077); /* so that only Apache can use socket */
- rc = bind(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr));
- umask(omask); /* can't fail, so can't clobber errno */
- if (rc < 0) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
- "Couldn't bind unix domain socket %s",
- sconf->sockname);
- return errno;
- }
-
- if (listen(sd, DEFAULT_CGID_LISTENBACKLOG) < 0) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
- "Couldn't listen on unix domain socket");
- return errno;
- }
-
- if (!geteuid()) {
- if (chown(sconf->sockname, unixd_config.user_id, -1) < 0) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
- "Couldn't change owner of unix domain socket %s",
- sconf->sockname);
- return errno;
- }
- }
-
- unixd_setup_child(); /* if running as root, switch to configured user/group */
-
- while (!daemon_should_exit) {
- int errfileno = STDERR_FILENO;
- char *argv0;
- char **env;
- const char * const *argv;
- apr_int32_t in_pipe;
- apr_int32_t out_pipe;
- apr_int32_t err_pipe;
- apr_cmdtype_e cmd_type;
- request_rec *r;
- apr_procattr_t *procattr = NULL;
- apr_proc_t *procnew = NULL;
- apr_file_t *inout;
- cgid_req_t cgid_req;
- apr_status_t stat;
-
- apr_pool_clear(ptrans);
-
- len = sizeof(unix_addr);
- sd2 = accept(sd, (struct sockaddr *)&unix_addr, &len);
- if (sd2 < 0) {
- if (errno != EINTR) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno,
- (server_rec *)data,
- "Error accepting on cgid socket");
- }
- continue;
- }
-
- r = apr_pcalloc(ptrans, sizeof(request_rec));
- procnew = apr_pcalloc(ptrans, sizeof(*procnew));
- r->pool = ptrans;
- stat = get_req(sd2, r, &argv0, &env, &cgid_req);
- if (stat != APR_SUCCESS) {
- ap_log_error(APLOG_MARK, APLOG_ERR, stat,
- main_server,
- "Error reading request on cgid socket");
- close(sd2);
- continue;
- }
-
- if (cgid_req.req_type == GETPID_REQ) {
- pid_t pid;
-
- pid = (pid_t)apr_hash_get(script_hash, &cgid_req.conn_id, sizeof(cgid_req.conn_id));
- if (write(sd2, &pid, sizeof(pid)) != sizeof(pid)) {
- ap_log_error(APLOG_MARK, APLOG_ERR, 0,
- main_server,
- "Error writing pid %" APR_PID_T_FMT " to handler", pid);
- }
- close(sd2);
- continue;
- }
-
- apr_os_file_put(&r->server->error_log, &errfileno, 0, r->pool);
- apr_os_file_put(&inout, &sd2, 0, r->pool);
-
- if (cgid_req.req_type == SSI_REQ) {
- in_pipe = APR_NO_PIPE;
- out_pipe = APR_FULL_BLOCK;
- err_pipe = APR_NO_PIPE;
- cmd_type = APR_SHELLCMD;
- }
- else {
- in_pipe = APR_CHILD_BLOCK;
- out_pipe = APR_CHILD_BLOCK;
- err_pipe = APR_CHILD_BLOCK;
- cmd_type = APR_PROGRAM;
- }
-
- if (((rc = apr_procattr_create(&procattr, ptrans)) != APR_SUCCESS) ||
- ((cgid_req.req_type == CGI_REQ) &&
- (((rc = apr_procattr_io_set(procattr,
- in_pipe,
- out_pipe,
- err_pipe)) != APR_SUCCESS) ||
- /* XXX apr_procattr_child_*_set() is creating an unnecessary
- * pipe between this process and the child being created...
- * It is cleaned up with the temporary pool for this request.
- */
- ((rc = apr_procattr_child_err_set(procattr, r->server->error_log, NULL)) != APR_SUCCESS) ||
- ((rc = apr_procattr_child_in_set(procattr, inout, NULL)) != APR_SUCCESS))) ||
- ((rc = apr_procattr_child_out_set(procattr, inout, NULL)) != APR_SUCCESS) ||
- ((rc = apr_procattr_dir_set(procattr,
- ap_make_dirstr_parent(r->pool, r->filename))) != APR_SUCCESS) ||
- ((rc = apr_procattr_cmdtype_set(procattr, cmd_type)) != APR_SUCCESS) ||
- ((rc = apr_procattr_child_errfn_set(procattr, cgid_child_errfn)) != APR_SUCCESS)) {
- /* Something bad happened, tell the world.
- * ap_log_rerror() won't work because the header table used by
- * ap_log_rerror() hasn't been replicated in the phony r
- */
- ap_log_error(APLOG_MARK, APLOG_ERR, rc, r->server,
- "couldn't set child process attributes: %s", r->filename);
- }
- else {
- apr_pool_userdata_set(r, ERRFN_USERDATA_KEY, apr_pool_cleanup_null, ptrans);
-
- argv = (const char * const *)create_argv(r->pool, NULL, NULL, NULL, argv0, r->args);
-
- /* We want to close sd2 for the new CGI process too.
- * If it is left open it'll make ap_pass_brigade() block
- * waiting for EOF if CGI forked something running long.
- * close(sd2) here should be okay, as CGI channel
- * is already dup()ed by apr_procattr_child_{in,out}_set()
- * above.
- */
- close(sd2);
-
- if (memcmp(&empty_ugid, &cgid_req.ugid, sizeof(empty_ugid))) {
- /* We have a valid identity, and can be sure that
- * cgid_suexec_id_doer will return a valid ugid
- */
- rc = ap_os_create_privileged_process(r, procnew, argv0, argv,
- (const char * const *)env,
- procattr, ptrans);
- } else {
- rc = apr_proc_create(procnew, argv0, argv,
- (const char * const *)env,
- procattr, ptrans);
- }
-
- if (rc != APR_SUCCESS) {
- /* Bad things happened. Everyone should have cleaned up.
- * ap_log_rerror() won't work because the header table used by
- * ap_log_rerror() hasn't been replicated in the phony r
- */
- ap_log_error(APLOG_MARK, APLOG_ERR, rc, r->server,
- "couldn't create child process: %d: %s", rc,
- apr_filename_of_pathname(r->filename));
- }
- else {
- /* We don't want to leak storage for the key, so only allocate
- * a key if the key doesn't exist yet in the hash; there are
- * only a limited number of possible keys (one for each
- * possible thread in the server), so we can allocate a copy
- * of the key the first time a thread has a cgid request.
- * Note that apr_hash_set() only uses the storage passed in
- * for the key if it is adding the key to the hash for the
- * first time; new key storage isn't needed for replacing the
- * existing value of a key.
- */
- void *key;
-
- if (apr_hash_get(script_hash, &cgid_req.conn_id, sizeof(cgid_req.conn_id))) {
- key = &cgid_req.conn_id;
- }
- else {
- key = apr_pcalloc(pcgi, sizeof(cgid_req.conn_id));
- memcpy(key, &cgid_req.conn_id, sizeof(cgid_req.conn_id));
- }
- apr_hash_set(script_hash, key, sizeof(cgid_req.conn_id),
- (void *)procnew->pid);
- }
- }
- }
- return -1;
-}
-
-static int cgid_start(apr_pool_t *p, server_rec *main_server,
- apr_proc_t *procnew)
-{
- daemon_should_exit = 0; /* clear setting from previous generation */
- if ((daemon_pid = fork()) < 0) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
- "mod_cgid: Couldn't spawn cgid daemon process");
- return DECLINED;
- }
- else if (daemon_pid == 0) {
- if (pcgi == NULL) {
- apr_pool_create(&pcgi, p);
- }
- cgid_server(main_server);
- exit(-1);
- }
- procnew->pid = daemon_pid;
- procnew->err = procnew->in = procnew->out = NULL;
- apr_pool_note_subprocess(p, procnew, APR_KILL_AFTER_TIMEOUT);
-#if APR_HAS_OTHER_CHILD
- apr_proc_other_child_register(procnew, cgid_maint, procnew, NULL, p);
-#endif
- return OK;
-}
-
-static int cgid_init(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp,
- server_rec *main_server)
-{
- apr_proc_t *procnew = NULL;
- int first_time = 0;
- const char *userdata_key = "cgid_init";
- module **m;
- int ret = OK;
-
- root_server = main_server;
- root_pool = p;
-
- apr_pool_userdata_get((void **)&procnew, userdata_key, main_server->process->pool);
- if (!procnew) {
- first_time = 1;
- procnew = apr_pcalloc(main_server->process->pool, sizeof(*procnew));
- procnew->pid = -1;
- procnew->err = procnew->in = procnew->out = NULL;
- apr_pool_userdata_set((const void *)procnew, userdata_key,
- apr_pool_cleanup_null, main_server->process->pool);
- }
-
- if (!first_time) {
- total_modules = 0;
- for (m = ap_preloaded_modules; *m != NULL; m++)
- total_modules++;
-
- ret = cgid_start(p, main_server, procnew);
- if (ret != OK ) {
- return ret;
- }
- cgid_pfn_reg_with_ssi = APR_RETRIEVE_OPTIONAL_FN(ap_register_include_handler);
- cgid_pfn_gtv = APR_RETRIEVE_OPTIONAL_FN(ap_ssi_get_tag_and_value);
- cgid_pfn_ps = APR_RETRIEVE_OPTIONAL_FN(ap_ssi_parse_string);
-
- if ((cgid_pfn_reg_with_ssi) && (cgid_pfn_gtv) && (cgid_pfn_ps)) {
- /* Required by mod_include filter. This is how mod_cgid registers
- * with mod_include to provide processing of the exec directive.
- */
- cgid_pfn_reg_with_ssi("exec", handle_exec);
- }
- }
- return ret;
-}
-
-static void *create_cgid_config(apr_pool_t *p, server_rec *s)
-{
- cgid_server_conf *c =
- (cgid_server_conf *) apr_pcalloc(p, sizeof(cgid_server_conf));
-
- c->logname = NULL;
- c->logbytes = DEFAULT_LOGBYTES;
- c->bufbytes = DEFAULT_BUFBYTES;
- c->sockname = ap_server_root_relative(p, DEFAULT_SOCKET);
- return c;
-}
-
-static void *merge_cgid_config(apr_pool_t *p, void *basev, void *overridesv)
-{
- cgid_server_conf *base = (cgid_server_conf *) basev, *overrides = (cgid_server_conf *) overridesv;
-
- return overrides->logname ? overrides : base;
-}
-
-static const char *set_scriptlog(cmd_parms *cmd, void *dummy, const char *arg)
-{
- server_rec *s = cmd->server;
- cgid_server_conf *conf = ap_get_module_config(s->module_config,
- &cgid_module);
-
- conf->logname = ap_server_root_relative(cmd->pool, arg);
-
- if (!conf->logname) {
- return apr_pstrcat(cmd->pool, "Invalid ScriptLog path ",
- arg, NULL);
- }
- return NULL;
-}
-
-static const char *set_scriptlog_length(cmd_parms *cmd, void *dummy, const char *arg)
-{
- server_rec *s = cmd->server;
- cgid_server_conf *conf = ap_get_module_config(s->module_config,
- &cgid_module);
-
- conf->logbytes = atol(arg);
- return NULL;
-}
-
-static const char *set_scriptlog_buffer(cmd_parms *cmd, void *dummy, const char *arg)
-{
- server_rec *s = cmd->server;
- cgid_server_conf *conf = ap_get_module_config(s->module_config,
- &cgid_module);
-
- conf->bufbytes = atoi(arg);
- return NULL;
-}
-
-static const char *set_script_socket(cmd_parms *cmd, void *dummy, const char *arg)
-{
- server_rec *s = cmd->server;
- cgid_server_conf *conf = ap_get_module_config(s->module_config,
- &cgid_module);
-
- conf->sockname = ap_server_root_relative(cmd->pool, arg);
-
- if (!conf->sockname) {
- return apr_pstrcat(cmd->pool, "Invalid Scriptsock path ",
- arg, NULL);
- }
-
- return NULL;
-}
-
-static const command_rec cgid_cmds[] =
-{
- AP_INIT_TAKE1("ScriptLog", set_scriptlog, NULL, RSRC_CONF,
- "the name of a log for script debugging info"),
- AP_INIT_TAKE1("ScriptLogLength", set_scriptlog_length, NULL, RSRC_CONF,
- "the maximum length (in bytes) of the script debug log"),
- AP_INIT_TAKE1("ScriptLogBuffer", set_scriptlog_buffer, NULL, RSRC_CONF,
- "the maximum size (in bytes) to record of a POST request"),
- AP_INIT_TAKE1("Scriptsock", set_script_socket, NULL, RSRC_CONF,
- "the name of the socket to use for communication with "
- "the cgi daemon."),
- {NULL}
-};
-
-static int log_scripterror(request_rec *r, cgid_server_conf * conf, int ret,
- apr_status_t rv, char *error)
-{
- apr_file_t *f = NULL;
- struct stat finfo;
- char time_str[APR_CTIME_LEN];
- int log_flags = rv ? APLOG_ERR : APLOG_ERR;
-
- ap_log_rerror(APLOG_MARK, log_flags, rv, r,
- "%s: %s", error, r->filename);
-
- /* XXX Very expensive mainline case! Open, then getfileinfo! */
- if (!conf->logname ||
- ((stat(conf->logname, &finfo) == 0)
- && (finfo.st_size > conf->logbytes)) ||
- (apr_file_open(&f, conf->logname,
- APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
- return ret;
- }
-
- /* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-bin/printenv HTTP/1.0" */
- apr_ctime(time_str, apr_time_now());
- apr_file_printf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
- r->args ? "?" : "", r->args ? r->args : "", r->protocol);
- /* "%% 500 /usr/local/apache/cgid-bin */
- apr_file_printf(f, "%%%% %d %s\n", ret, r->filename);
-
- apr_file_printf(f, "%%error\n%s\n", error);
-
- apr_file_close(f);
- return ret;
-}
-
-static int log_script(request_rec *r, cgid_server_conf * conf, int ret,
- char *dbuf, const char *sbuf, apr_bucket_brigade *bb,
- apr_file_t *script_err)
-{
- const apr_array_header_t *hdrs_arr = apr_table_elts(r->headers_in);
- const apr_table_entry_t *hdrs = (apr_table_entry_t *) hdrs_arr->elts;
- char argsbuffer[HUGE_STRING_LEN];
- apr_file_t *f = NULL;
- apr_bucket *e;
- const char *buf;
- apr_size_t len;
- apr_status_t rv;
- int first;
- int i;
- struct stat finfo;
- char time_str[APR_CTIME_LEN];
-
- /* XXX Very expensive mainline case! Open, then getfileinfo! */
- if (!conf->logname ||
- ((stat(conf->logname, &finfo) == 0)
- && (finfo.st_size > conf->logbytes)) ||
- (apr_file_open(&f, conf->logname,
- APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
- /* Soak up script output */
- discard_script_output(bb);
- if (script_err) {
- while (apr_file_gets(argsbuffer, HUGE_STRING_LEN,
- script_err) == APR_SUCCESS)
- continue;
- }
- return ret;
- }
-
- /* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-bin/printenv HTTP/1.0" */
- apr_ctime(time_str, apr_time_now());
- apr_file_printf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
- r->args ? "?" : "", r->args ? r->args : "", r->protocol);
- /* "%% 500 /usr/local/apache/cgid-bin" */
- apr_file_printf(f, "%%%% %d %s\n", ret, r->filename);
-
- apr_file_puts("%request\n", f);
- for (i = 0; i < hdrs_arr->nelts; ++i) {
- if (!hdrs[i].key)
- continue;
- apr_file_printf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
- }
- if ((r->method_number == M_POST || r->method_number == M_PUT)
- && *dbuf) {
- apr_file_printf(f, "\n%s\n", dbuf);
- }
-
- apr_file_puts("%response\n", f);
- hdrs_arr = apr_table_elts(r->err_headers_out);
- hdrs = (const apr_table_entry_t *) hdrs_arr->elts;
-
- for (i = 0; i < hdrs_arr->nelts; ++i) {
- if (!hdrs[i].key)
- continue;
- apr_file_printf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
- }
-
- if (sbuf && *sbuf)
- apr_file_printf(f, "%s\n", sbuf);
-
- first = 1;
- APR_BRIGADE_FOREACH(e, bb) {
- if (APR_BUCKET_IS_EOS(e)) {
- break;
- }
- rv = apr_bucket_read(e, &buf, &len, APR_BLOCK_READ);
- if (!APR_STATUS_IS_SUCCESS(rv) || (len == 0)) {
- break;
- }
- if (first) {
- apr_file_puts("%stdout\n", f);
- first = 0;
- }
- apr_file_write(f, buf, &len);
- apr_file_puts("\n", f);
- }
-
- if (script_err) {
- if (apr_file_gets(argsbuffer, HUGE_STRING_LEN,
- script_err) == APR_SUCCESS) {
- apr_file_puts("%stderr\n", f);
- apr_file_puts(argsbuffer, f);
- while (apr_file_gets(argsbuffer, HUGE_STRING_LEN,
- script_err) == APR_SUCCESS)
- apr_file_puts(argsbuffer, f);
- apr_file_puts("\n", f);
- }
- }
-
- if (script_err) {
- apr_file_close(script_err);
- }
-
- apr_file_close(f);
- return ret;
-}
-
-static apr_status_t close_unix_socket(void *thefd)
-{
- int fd = (int)thefd;
-
- return close(fd);
-}
-
-static int connect_to_daemon(int *sdptr, request_rec *r,
- cgid_server_conf *conf)
-{
- struct sockaddr_un unix_addr;
- int sd;
- int connect_tries;
- apr_interval_time_t sliding_timer;
-
- memset(&unix_addr, 0, sizeof(unix_addr));
- unix_addr.sun_family = AF_UNIX;
- strcpy(unix_addr.sun_path, conf->sockname);
-
- connect_tries = 0;
- sliding_timer = 100000; /* 100 milliseconds */
- while (1) {
- ++connect_tries;
- if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
- return log_scripterror(r, conf, HTTP_INTERNAL_SERVER_ERROR, errno,
- "unable to create socket to cgi daemon");
- }
- if (connect(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr)) < 0) {
- if (errno == ECONNREFUSED && connect_tries < DEFAULT_CONNECT_ATTEMPTS) {
- ap_log_rerror(APLOG_MARK, APLOG_DEBUG, errno, r,
- "connect #%d to cgi daemon failed, sleeping before retry",
- connect_tries);
- close(sd);
- apr_sleep(sliding_timer);
- if (sliding_timer < apr_time_from_sec(2)) {
- sliding_timer *= 2;
- }
- }
- else {
- close(sd);
- return log_scripterror(r, conf, HTTP_SERVICE_UNAVAILABLE, errno,
- "unable to connect to cgi daemon after multiple tries");
- }
- }
- else {
- apr_pool_cleanup_register(r->pool, (void *)sd, close_unix_socket,
- apr_pool_cleanup_null);
- break; /* we got connected! */
- }
- /* gotta try again, but make sure the cgid daemon is still around */
- if (kill(daemon_pid, 0) != 0) {
- return log_scripterror(r, conf, HTTP_SERVICE_UNAVAILABLE, errno,
- "cgid daemon is gone; is Apache terminating?");
- }
- }
- *sdptr = sd;
- return OK;
-}
-
-static void discard_script_output(apr_bucket_brigade *bb)
-{
- apr_bucket *e;
- const char *buf;
- apr_size_t len;
- apr_status_t rv;
- APR_BRIGADE_FOREACH(e, bb) {
- if (APR_BUCKET_IS_EOS(e)) {
- break;
- }
- rv = apr_bucket_read(e, &buf, &len, APR_BLOCK_READ);
- if (!APR_STATUS_IS_SUCCESS(rv)) {
- break;
- }
- }
-}
-
-/****************************************************************
- *
- * Actual cgid handling...
- */
-
-struct cleanup_script_info {
- request_rec *r;
- unsigned long conn_id;
- cgid_server_conf *conf;
-};
-
-static apr_status_t dead_yet(pid_t pid, apr_interval_time_t max_wait)
-{
- apr_interval_time_t interval = 10000; /* 10 ms */
- apr_interval_time_t total = 0;
-
- do {
-#ifdef _AIX
- /* On AIX, for processes like mod_cgid's script children where
- * SIGCHLD is ignored, kill(pid,0) returns success for up to
- * one second after the script child exits, based on when a
- * daemon runs to clean up unnecessary process table entries.
- * getpgid() can report the proper info (-1/ESRCH) immediately.
- */
- if (getpgid(pid) < 0) {
-#else
- if (kill(pid, 0) < 0) {
-#endif
- return APR_SUCCESS;
- }
- apr_sleep(interval);
- total = total + interval;
- if (interval < 500000) {
- interval *= 2;
- }
- } while (total < max_wait);
- return APR_EGENERAL;
-}
-
-static apr_status_t cleanup_nonchild_process(request_rec *r, pid_t pid)
-{
- kill(pid, SIGTERM); /* in case it isn't dead yet */
- if (dead_yet(pid, apr_time_from_sec(3)) == APR_SUCCESS) {
- return APR_SUCCESS;
- }
- ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
- "CGI process %" APR_PID_T_FMT " didn't exit, sending SIGKILL",
- pid);
- kill(pid, SIGKILL);
- if (dead_yet(pid, apr_time_from_sec(3)) == APR_SUCCESS) {
- return APR_SUCCESS;
- }
- ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
- "CGI process %" APR_PID_T_FMT " didn't exit, sending SIGKILL again",
- pid);
- kill(pid, SIGKILL);
-
- return APR_EGENERAL;
-}
-
-static apr_status_t cleanup_script(void *vptr)
-{
- struct cleanup_script_info *info = vptr;
- int sd;
- int rc;
- cgid_req_t req = {0};
- pid_t pid;
- apr_status_t stat;
-
- rc = connect_to_daemon(&sd, info->r, info->conf);
- if (rc != OK) {
- return APR_EGENERAL;
- }
-
- /* we got a socket, and there is already a cleanup registered for it */
-
- req.req_type = GETPID_REQ;
- req.conn_id = info->r->connection->id;
-
- stat = sock_write(sd, &req, sizeof(req));
- if (stat != APR_SUCCESS) {
- return stat;
- }
-
- /* wait for pid of script */
- stat = sock_read(sd, &pid, sizeof(pid));
- if (stat != APR_SUCCESS) {
- return stat;
- }
-
- if (pid == 0) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, info->r,
- "daemon couldn't find CGI process for connection %lu",
- info->conn_id);
- return APR_EGENERAL;
- }
- return cleanup_nonchild_process(info->r, pid);
-}
-
-static int cgid_handler(request_rec *r)
-{
- conn_rec *c = r->connection;
- int retval, nph, dbpos = 0;
- char *argv0, *dbuf = NULL;
- apr_bucket_brigade *bb;
- apr_bucket *b;
- cgid_server_conf *conf;
- int is_included;
- int seen_eos, child_stopped_reading;
- int sd;
- char **env;
- apr_file_t *tempsock;
- struct cleanup_script_info *info;
- apr_status_t rv;
-
- if (strcmp(r->handler,CGI_MAGIC_TYPE) && strcmp(r->handler,"cgi-script"))
- return DECLINED;
-
- conf = ap_get_module_config(r->server->module_config, &cgid_module);
- is_included = !strcmp(r->protocol, "INCLUDED");
-
- if ((argv0 = strrchr(r->filename, '/')) != NULL)
- argv0++;
- else
- argv0 = r->filename;
-
- nph = !(strncmp(argv0, "nph-", 4));
-
- argv0 = r->filename;
-
- if (!(ap_allow_options(r) & OPT_EXECCGI) && !is_scriptaliased(r))
- return log_scripterror(r, conf, HTTP_FORBIDDEN, 0,
- "Options ExecCGI is off in this directory");
- if (nph && is_included)
- return log_scripterror(r, conf, HTTP_FORBIDDEN, 0,
- "attempt to include NPH CGI script");
-
-#if defined(OS2) || defined(WIN32)
-#error mod_cgid does not work on this platform. If you teach it to, look
-#error at mod_cgi.c for required code in this path.
-#else
- if (r->finfo.filetype == 0)
- return log_scripterror(r, conf, HTTP_NOT_FOUND, 0,
- "script not found or unable to stat");
-#endif
- if (r->finfo.filetype == APR_DIR)
- return log_scripterror(r, conf, HTTP_FORBIDDEN, 0,
- "attempt to invoke directory as script");
-
- if ((r->used_path_info == AP_REQ_REJECT_PATH_INFO) &&
- r->path_info && *r->path_info)
- {
- /* default to accept */
- return log_scripterror(r, conf, HTTP_NOT_FOUND, 0,
- "AcceptPathInfo off disallows user's path");
- }
-/*
- if (!ap_suexec_enabled) {
- if (!ap_can_exec(&r->finfo))
- return log_scripterror(r, conf, HTTP_FORBIDDEN, 0,
- "file permissions deny server execution");
- }
-*/
- ap_add_common_vars(r);
- ap_add_cgi_vars(r);
- env = ap_create_environment(r->pool, r->subprocess_env);
-
- if ((retval = connect_to_daemon(&sd, r, conf)) != OK) {
- return retval;
- }
-
- rv = send_req(sd, r, argv0, env, CGI_REQ);
- if (rv != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "write to cgi daemon process");
- }
-
- info = apr_palloc(r->pool, sizeof(struct cleanup_script_info));
- info->r = r;
- info->conn_id = r->connection->id;
- info->conf = conf;
- apr_pool_cleanup_register(r->pool, info,
- cleanup_script,
- apr_pool_cleanup_null);
- /* We are putting the socket discriptor into an apr_file_t so that we can
- * use a pipe bucket to send the data to the client. APR will create
- * a cleanup for the apr_file_t which will close the socket, so we'll
- * get rid of the cleanup we registered when we created the socket.
- */
-
- apr_os_pipe_put_ex(&tempsock, &sd, 1, r->pool);
- apr_pool_cleanup_kill(r->pool, (void *)sd, close_unix_socket);
-
- if ((argv0 = strrchr(r->filename, '/')) != NULL)
- argv0++;
- else
- argv0 = r->filename;
-
- /* Transfer any put/post args, CERN style...
- * Note that we already ignore SIGPIPE in the core server.
- */
- bb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
- seen_eos = 0;
- child_stopped_reading = 0;
- if (conf->logname) {
- dbuf = apr_palloc(r->pool, conf->bufbytes + 1);
- dbpos = 0;
- }
- do {
- apr_bucket *bucket;
-
- rv = ap_get_brigade(r->input_filters, bb, AP_MODE_READBYTES,
- APR_BLOCK_READ, HUGE_STRING_LEN);
-
- if (rv != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "Error reading request entity data");
- return HTTP_INTERNAL_SERVER_ERROR;
- }
-
- APR_BRIGADE_FOREACH(bucket, bb) {
- const char *data;
- apr_size_t len;
-
- if (APR_BUCKET_IS_EOS(bucket)) {
- seen_eos = 1;
- break;
- }
-
- /* We can't do much with this. */
- if (APR_BUCKET_IS_FLUSH(bucket)) {
- continue;
- }
-
- /* If the child stopped, we still must read to EOS. */
- if (child_stopped_reading) {
- continue;
- }
-
- /* read */
- apr_bucket_read(bucket, &data, &len, APR_BLOCK_READ);
-
- if (conf->logname && dbpos < conf->bufbytes) {
- int cursize;
-
- if ((dbpos + len) > conf->bufbytes) {
- cursize = conf->bufbytes - dbpos;
- }
- else {
- cursize = len;
- }
- memcpy(dbuf + dbpos, data, cursize);
- dbpos += cursize;
- }
-
- /* Keep writing data to the child until done or too much time
- * elapses with no progress or an error occurs.
- */
- rv = apr_file_write_full(tempsock, data, len, NULL);
-
- if (rv != APR_SUCCESS) {
- /* silly script stopped reading, soak up remaining message */
- child_stopped_reading = 1;
- }
- }
- apr_brigade_cleanup(bb);
- }
- while (!seen_eos);
-
- if (conf->logname) {
- dbuf[dbpos] = '\0';
- }
-
- /* we're done writing, or maybe we didn't write at all;
- * force EOF on child's stdin so that the cgi detects end (or
- * absence) of data
- */
- shutdown(sd, 1);
-
- /* Handle script return... */
- if (!nph) {
- const char *location;
- char sbuf[MAX_STRING_LEN];
- int ret;
-
- bb = apr_brigade_create(r->pool, c->bucket_alloc);
- b = apr_bucket_pipe_create(tempsock, c->bucket_alloc);
- APR_BRIGADE_INSERT_TAIL(bb, b);
- b = apr_bucket_eos_create(c->bucket_alloc);
- APR_BRIGADE_INSERT_TAIL(bb, b);
-
- if ((ret = ap_scan_script_header_err_brigade(r, bb, sbuf))) {
- return log_script(r, conf, ret, dbuf, sbuf, bb, NULL);
- }
-
- location = apr_table_get(r->headers_out, "Location");
-
- if (location && location[0] == '/' && r->status == 200) {
-
- /* Soak up all the script output */
- discard_script_output(bb);
- apr_brigade_destroy(bb);
- /* This redirect needs to be a GET no matter what the original
- * method was.
- */
- r->method = apr_pstrdup(r->pool, "GET");
- r->method_number = M_GET;
-
- /* We already read the message body (if any), so don't allow
- * the redirected request to think it has one. We can ignore
- * Transfer-Encoding, since we used REQUEST_CHUNKED_ERROR.
- */
- apr_table_unset(r->headers_in, "Content-Length");
-
- ap_internal_redirect_handler(location, r);
- return OK;
- }
- else if (location && r->status == 200) {
- /* XX Note that if a script wants to produce its own Redirect
- * body, it now has to explicitly *say* "Status: 302"
- */
- discard_script_output(bb);
- apr_brigade_destroy(bb);
- return HTTP_MOVED_TEMPORARILY;
- }
-
- ap_pass_brigade(r->output_filters, bb);
- }
-
- if (nph) {
- struct ap_filter_t *cur;
-
- /* get rid of all filters up through protocol... since we
- * haven't parsed off the headers, there is no way they can
- * work
- */
-
- cur = r->proto_output_filters;
- while (cur && cur->frec->ftype < AP_FTYPE_CONNECTION) {
- cur = cur->next;
- }
- r->output_filters = r->proto_output_filters = cur;
-
- bb = apr_brigade_create(r->pool, c->bucket_alloc);
- b = apr_bucket_pipe_create(tempsock, c->bucket_alloc);
- APR_BRIGADE_INSERT_TAIL(bb, b);
- b = apr_bucket_eos_create(c->bucket_alloc);
- APR_BRIGADE_INSERT_TAIL(bb, b);
- ap_pass_brigade(r->output_filters, bb);
- }
-
- return OK; /* NOT r->status, even if it has changed. */
-}
-
-
-
-
-/*============================================================================
- *============================================================================
- * This is the beginning of the cgi filter code moved from mod_include. This
- * is the code required to handle the "exec" SSI directive.
- *============================================================================
- *============================================================================*/
-static int include_cgi(char *s, request_rec *r, ap_filter_t *next,
- apr_bucket *head_ptr, apr_bucket **inserted_head)
-{
- request_rec *rr = ap_sub_req_lookup_uri(s, r, next);
- int rr_status;
- apr_bucket *tmp_buck, *tmp2_buck;
-
- if (rr->status != HTTP_OK) {
- ap_destroy_sub_req(rr);
- return -1;
- }
-
- /* No hardwired path info or query allowed */
-
- if ((rr->path_info && rr->path_info[0]) || rr->args) {
- ap_destroy_sub_req(rr);
- return -1;
- }
- if (rr->finfo.filetype != APR_REG) {
- ap_destroy_sub_req(rr);
- return -1;
- }
-
- /* Script gets parameters of the *document*, for back compatibility */
-
- rr->path_info = r->path_info; /* hard to get right; see mod_cgi.c */
- rr->args = r->args;
-
- /* Force sub_req to be treated as a CGI request, even if ordinary
- * typing rules would have called it something else.
- */
- ap_set_content_type(rr, CGI_MAGIC_TYPE);
-
- /* Run it. */
-
- rr_status = ap_run_sub_req(rr);
- if (ap_is_HTTP_REDIRECT(rr_status)) {
- apr_size_t len_loc;
- const char *location = apr_table_get(rr->headers_out, "Location");
- conn_rec *c = r->connection;
-
- location = ap_escape_html(rr->pool, location);
- len_loc = strlen(location);
-
- /* XXX: if most of this stuff is going to get copied anyway,
- * it'd be more efficient to pstrcat it into a single pool buffer
- * and a single pool bucket */
-
- tmp_buck = apr_bucket_immortal_create("<A HREF=\"",
- sizeof("<A HREF=\"") - 1,
- c->bucket_alloc);
- APR_BUCKET_INSERT_BEFORE(head_ptr, tmp_buck);
- tmp2_buck = apr_bucket_heap_create(location, len_loc, NULL,
- c->bucket_alloc);
- APR_BUCKET_INSERT_BEFORE(head_ptr, tmp2_buck);
- tmp2_buck = apr_bucket_immortal_create("\">", sizeof("\">") - 1,
- c->bucket_alloc);
- APR_BUCKET_INSERT_BEFORE(head_ptr, tmp2_buck);
- tmp2_buck = apr_bucket_heap_create(location, len_loc, NULL,
- c->bucket_alloc);
- APR_BUCKET_INSERT_BEFORE(head_ptr, tmp2_buck);
- tmp2_buck = apr_bucket_immortal_create("</A>", sizeof("</A>") - 1,
- c->bucket_alloc);
- APR_BUCKET_INSERT_BEFORE(head_ptr, tmp2_buck);
-
- if (*inserted_head == NULL) {
- *inserted_head = tmp_buck;
- }
- }
-
- ap_destroy_sub_req(rr);
-
- return 0;
-}
-
-
-/* This is the special environment used for running the "exec cmd="
- * variety of SSI directives.
- */
-static void add_ssi_vars(request_rec *r, ap_filter_t *next)
-{
- apr_table_t *e = r->subprocess_env;
-
- if (r->path_info && r->path_info[0] != '\0') {
- request_rec *pa_req;
-
- apr_table_setn(e, "PATH_INFO", ap_escape_shell_cmd(r->pool, r->path_info));
-
- pa_req = ap_sub_req_lookup_uri(ap_escape_uri(r->pool, r->path_info), r, NULL);
- if (pa_req->filename) {
- apr_table_setn(e, "PATH_TRANSLATED",
- apr_pstrcat(r->pool, pa_req->filename, pa_req->path_info, NULL));
- }
- ap_destroy_sub_req(pa_req);
- }
-
- if (r->args) {
- char *arg_copy = apr_pstrdup(r->pool, r->args);
-
- apr_table_setn(e, "QUERY_STRING", r->args);
- ap_unescape_url(arg_copy);
- apr_table_setn(e, "QUERY_STRING_UNESCAPED", ap_escape_shell_cmd(r->pool, arg_copy));
- }
-}
-
-static int include_cmd(include_ctx_t *ctx, apr_bucket_brigade **bb, char *command,
- request_rec *r, ap_filter_t *f)
-{
- char **env;
- int sd;
- apr_status_t rc = APR_SUCCESS;
- int retval;
- apr_bucket_brigade *bcgi;
- apr_bucket *b;
- apr_file_t *tempsock = NULL;
- cgid_server_conf *conf = ap_get_module_config(r->server->module_config,
- &cgid_module);
- struct cleanup_script_info *info;
-
- add_ssi_vars(r, f->next);
- env = ap_create_environment(r->pool, r->subprocess_env);
-
- if ((retval = connect_to_daemon(&sd, r, conf)) != OK) {
- return retval;
- }
-
- SPLIT_AND_PASS_PRETAG_BUCKETS(*bb, ctx, f->next, rc);
- if (rc != APR_SUCCESS) {
- return rc;
- }
-
- send_req(sd, r, command, env, SSI_REQ);
-
- info = apr_palloc(r->pool, sizeof(struct cleanup_script_info));
- info->r = r;
- info->conn_id = r->connection->id;
- info->conf = conf;
- /* for this type of request, the script is invoked through an
- * intermediate shell process... cleanup_script is only able
- * to knock out the shell process, not the actual script
- */
- apr_pool_cleanup_register(r->pool, info,
- cleanup_script,
- apr_pool_cleanup_null);
- /* We are putting the socket discriptor into an apr_file_t so that we can
- * use a pipe bucket to send the data to the client. APR will create
- * a cleanup for the apr_file_t which will close the socket, so we'll
- * get rid of the cleanup we registered when we created the socket.
- */
- apr_os_pipe_put_ex(&tempsock, &sd, 1, r->pool);
- apr_pool_cleanup_kill(r->pool, (void *)sd, close_unix_socket);
-
- bcgi = apr_brigade_create(r->pool, r->connection->bucket_alloc);
- b = apr_bucket_pipe_create(tempsock, r->connection->bucket_alloc);
- APR_BRIGADE_INSERT_TAIL(bcgi, b);
- ap_pass_brigade(f->next, bcgi);
-
- return 0;
-}
-
-static int handle_exec(include_ctx_t *ctx, apr_bucket_brigade **bb, request_rec *r,
- ap_filter_t *f, apr_bucket *head_ptr, apr_bucket **inserted_head)
-{
- char *tag = NULL;
- char *tag_val = NULL;
- char *file = r->filename;
- apr_bucket *tmp_buck;
- char parsed_string[MAX_STRING_LEN];
-
- *inserted_head = NULL;
- if (ctx->flags & FLAG_PRINTING) {
- if (ctx->flags & FLAG_NO_EXEC) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
- "exec used but not allowed in %s", r->filename);
- CREATE_ERROR_BUCKET(ctx, tmp_buck, head_ptr, *inserted_head);
- }
- else {
- while (1) {
- cgid_pfn_gtv(ctx, &tag, &tag_val, 1);
- if (tag_val == NULL) {
- if (tag == NULL) {
- return (0);
- }
- else {
- return 1;
- }
- }
- if (!strcmp(tag, "cmd")) {
- cgid_pfn_ps(r, ctx, tag_val, parsed_string, sizeof(parsed_string), 1);
- if (include_cmd(ctx, bb, parsed_string, r, f) == -1) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
- "execution failure for parameter \"%s\" "
- "to tag exec in file %s", tag, r->filename);
- CREATE_ERROR_BUCKET(ctx, tmp_buck, head_ptr, *inserted_head);
- }
- /* just in case some stooge changed directories */
- }
- else if (!strcmp(tag, "cgi")) {
- apr_status_t retval = APR_SUCCESS;
-
- cgid_pfn_ps(r, ctx, tag_val, parsed_string, sizeof(parsed_string), 0);
- SPLIT_AND_PASS_PRETAG_BUCKETS(*bb, ctx, f->next, retval);
- if (retval != APR_SUCCESS) {
- return retval;
- }
-
- if (include_cgi(parsed_string, r, f->next, head_ptr, inserted_head) == -1) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
- "invalid CGI ref \"%s\" in %s", tag_val, file);
- CREATE_ERROR_BUCKET(ctx, tmp_buck, head_ptr, *inserted_head);
- }
- }
- else {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
- "unknown parameter \"%s\" to tag exec in %s", tag, file);
- CREATE_ERROR_BUCKET(ctx, tmp_buck, head_ptr, *inserted_head);
- }
- }
- }
- }
- return 0;
-}
-/*============================================================================
- *============================================================================
- * This is the end of the cgi filter code moved from mod_include.
- *============================================================================
- *============================================================================*/
-
-
-static void register_hook(apr_pool_t *p)
-{
- static const char * const aszPre[] = { "mod_include.c", NULL };
-
- ap_hook_post_config(cgid_init, aszPre, NULL, APR_HOOK_MIDDLE);
- ap_hook_handler(cgid_handler, NULL, NULL, APR_HOOK_MIDDLE);
-}
-
-module AP_MODULE_DECLARE_DATA cgid_module = {
- STANDARD20_MODULE_STUFF,
- NULL, /* dir config creater */
- NULL, /* dir merger --- default is to override */
- create_cgid_config, /* server config */
- merge_cgid_config, /* merge server config */
- cgid_cmds, /* command table */
- register_hook /* register_handlers */
-};
-